Home / 137,579.93-206,369.91-90,821.87

Finding the Fourth Proportional to 137,579.93, 206,369.91 and 90,821.87

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Solution

The fourth proportional to 137,579.93, 206,369.91 and 90,821.87 is: 136,232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,579.93 : 206,369.91 = 90,821.87 : x
  2. Step 2: Convert to fraction form
    137,579.93/206,369.91 = 90,821.87/x
  3. Step 3: Cross multiply
    137,579.93x = 206,369.91 × 90,821.87
  4. Step 4: Simplify right side
    137,579.93x = 18,742,901,137.93
  5. Step 5: Solve for x
    x = 18,742,901,137.93/137,579.93
  6. Step 6: Final answer
    x = 136,232.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.